Machine for sawing logs



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Patented June 21,1898.

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J. ALLE N & M. L. JONES. MACHINE FOR SAWING LOGS.

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MACHINE FOR SAWING LOGS.

Patented June 21,1898.

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' JAMES ALLEN, OF \VILMINGTON, AND MILTON L. JONES, OF TROY, NORTHCAROLINA.

MACHINE FO'R SIAWING LOGS.

SPECIFICATION forming part of Letters Patent No. 606,041, dated June 21,1898.

Application filed February 10, 1898. Serial No. 669,869. (No model.)

To all whom it may concern):

Be it known that we; JAMES ALLEN, resid ing at Wilmington, in thecounty'of New Han over, and MILTON L. JONES, residing at Troy, in thecounty of Montgomery, State of North Carolina, citizens of the UnitedStates, have invented certain new and useful Improvements in Machinesfor Sawing Logs; and we do hereby declare that the following is a full,clear, and exact description of the same, reference being had to theannexed drawings, making a part of this specification, and to theletters of reference marked thereon.

The present invention has relation to that class of sawing-machinesdesigned for cutting logs into rift and quarter-sawed lumber by firstquartering the log in an ordinary saw.- mill, then cutting each quarterinto plank by cutting from one flat side of the quarter, and afterwardreversing and taking another cut from the opposite side and continuingin this manner until the entire quarter is cut up.

It is the object of the present invention to provide such a machine thatwill be simple in construction and effective in operation and in which adouble table is used for cutting the quarters into rift that accuratelygages the cutting and allowing the quarter to be turned from onestraight side of the saw to the other.

The invention therefore consists in a machine constructed substantiallyas shown in the drawings and hereinafter described and claimed.

Figure 1 of the drawings represents a top plan view of a sawing-machineconstructed in accordance with our invention; Fig. 2, a side elevationthereof; Fig. 3, an end view of the machine; Fig. 4, an end view, partlyin section, of the tables and rollers, showing one-quarter of the log inposition on the tables. Fig. 5 is a side elevation, partly in section,of the automatic stop, showing it connected to the supporting and guiderails; Fig. 6, a sectional view taken on line 00 m of Fig. 5. Fig. 7 isa detail view of the steam cylinder, piston, and pipe connections, thecylinder being shown in section and the direction of the steam beingshown by arrows.

In the accompanying drawings, A B repre sent two parallel tables of anypreferred construction and formed of iron and steel to prevent theliability of the tables warping or shrinking, as would be the case werethey constructed of wood. These double tables are connected together atone end only by a suitable transverse brace a or by any other preferredmeans, the opposite end of the tables being left open or unattached, soas to admit of the tables being run past the saw, thereby rendering iteasy to change saws, an advantage which is considered of materialimportance in this class of sawing-machines. These tables A B, beingconnected, move together over a suitable track of any desirable length,said track comprising the guide-rails b and the supporting-rails 0,connected in any suitable manner to the under side of the tables.

The guide-rails h are connected to the tables at or near their inneredge, while the rails c are connected at or near the outer edge of saidtables.

The rails 12 are V. shape in cross-section, as shown in Fig. 4 of thedrawings, and engage with correspondingly-formed grooves in theguide-rollers 0, while the rails 0 have a flat bearing to correspondwith the smooth-faced supporting-rollers D E.

A transverse shaft j carries the grooved rollers O and ,smooth -facedroller D, said shaft being supported in suitable bearings 61 e. Thesmooth-faced roller E engages the rail 0 at or near the outer edge ofthe table B, said roller having a short shaft f, supported in a bearingg. Any number of these grooved and smooth-faced rollers may be usedthroughout the length of the track to give proper support to the tablesand render the tables easy of operation.

The several bearings of the rollers herein referred to are supportedupon a suitable stand or framework F of any prefer-red constructionfound best adapted to the purpose.

Transverse rests G for the logs are bolted or otherwise secured to thetables A B and may be of any desirable construction, and extending atright angles to the tables is a stationary saw-frame H, which may be ofany of the usual forms. This saw-frame supports the mandrel 7L, to whicha belt-pulley I is suitably keyed, and upon the inner end of saidmandrel is the circular saw K, which is held thereon by the usual collar2'.

The tables being very narrow, the operator is enabled to stand within ashort distance of the saw-line, the tables being just the heightnecessary to enable the operator to stand by in an upright position andconveniently and easily turn the quarter-logs from one side to theother.

The double tables A B enable a cut to be made from each side of thequarter-log, said tables moving together along the track, the rails ofthetrack being upon the under side of the tables, at or near each edgethereof, and, in connection with the grooved guiderollers and thesmooth-faced supporting-rollers, form a perfect support for the tableswhile in motion and prevent any lateral movement thereof, therebycausing the table to move in a perfectly straight line and the saw tomake a perfectly straight out through the quarter-log.

At each end of the tables A B are suitable stops L, which ext-endtransversely thereof and are for the purpose of preventing thequarter-log'from moving endwise and holding it in position on thetables.

For conveniently and accurately gaging the thickness of the lumber thereis provided a series of gages connected to the upper side of each of thetables and arranged opposite each other, said gages beingspring-actuated or automatic in their action as well as adjustable toregulate the thickness to which the lumber is to be out. Any number ofthese gages may be employed, and consist of a pivoted gage-arm M,pivotally connected to an adjustable carrier N upon the track-rail c. Torender this carrier adjustable, the same is provided with slots k,extending lengthwise of the carrier, through which bolts Z extend, andhaving nuts an engaging the screwthreaded ends thereof, whereby thecarrier is held in its adjusted position.

Any suitable and well-known means may be employed to render the carrieradjustable, so that the gage may be adjusted, this being leftdiscretionary with the manufacturer.

The gage M is not only adjustable, as above described, but it isspring-actuated or automatic in its action, and to secure this action ofthe gage there is provided a suitable spring 0, having one end securedto the rail 1) and its opposite or free end extending upward to form asupport at for the end of the gage, as shown in Figs. 5 and (3 of thedrawings. Any well-known form of spring may be substituted for thatshown so long as the gage is rendered spring-actuated or automatic inits action.

As previously stated, the adjustability of the gage controls thethickness of the lumber to be out, the position of the quarter-log, asindicated by Y in Fig. 4- of the drawings, being shown in relation tothe gage M.

When the log rests upon the table, as in I Fig. 4 of the drawings, thegage M under the log will be forced down even with the table by theweight of said leg, the gage upon the opposite table A being broughtinto operating position by the action of the spring 0 to gage thethickness of the lumber being cut, thus bringing the gage into positionas the quarter-log is turned from one table to another.

To operate the tables by carrying them back and forth upon the trackhereinbefore described, it is preferred to use steam-power, and toprovide for this there is shown a suitable steam-cylinder P, of anysuitable size and length, upon the under side of the table A, in which asuitable piston R, connected to a piston-rod 0, works. A steam-pipe Sconnects with the cylinder P by branch pipes 19 r to allow the steam topass in between the cylinder-head and piston to form a cushion.

Any suitable and well-known means may be employed whereby the tables maybe propelled or moved by steam-power, that shown being only one in manythat may be used to attain this end.

The pipe S is provided with the usual checkvalve 8 to prevent the steambetween the cylinder-head and piston from escaping back into the pipe.

Having now fully described our invention, what we claim as new, anddesire to secure by Letters Patent, is

1. A machine for sawing logs, consisting of two longitudinal andparallel tables connected so that they will move together upon asuitable track one upon each side of the saw, each table near its inneredge having a series of gages normally presenting a rigid gaging-surfacetoward the plane of the saw but mounted so as to yield downward underthe weight of the log, substantially as and for the purpose set forth.

2. A machine for sawing logs, consisting of, two longitudinal andparallel tables connected so that they will move together upon asuitable track, each table near its inner edge having a series ofadjustable and automaticallyoperating or spring-actuated gages arrangedopposite each other, and a circular saw 10- cated between the tables,substantially as and j for the purpose described.

3. In a machine for sawing logs, a suitable traveling table upon whichthe log is supported, and a series of gages to regulate the thickness ofthe sawed lumber, consisting of a carrier adjustable toward and from theplane of the saw,a gage-arm 'pivotally connected thereto, and a suitablespring supporting the free end of the arm and adapted to operatesubstantially as and for the purpose "specified.

4. A machine for sawing logs, consisting of two longitudinal andparallel tables connected together at one end only so that they willmove as one table and allow the same to run past the saw, adjustable andautomaticallyacting gages connected to the tables near their inner edgesand located opposite each other, V-shaped guide-rails and flatbearingsupporting rails connected to the under side of the tables neartheir inner and outer edges respectively, and grooved guide-rollers andsmooth-faced supporting-rollers with which the rails engage, and acircular saw located

